Transmission mechanism for automobiles.



M. H. GRABOWSKY. TRANSMISSION MECHANISM FOR AUTOMOBILES.

APPLICATION FILED JUNE 21, 1911.

311mm hr mug; 6 mm m Atturnrga Patented Feb. 13, 1912.

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TRANSMISSION MECHANISM FOR AUTDMOBILES.

Specification of Letters Patent.

Application filed June 21, 1911. Serial No. 634,555.

To all whom it may concern:

Be it known that 1, Max H. Gnasowsnr, citizen of the United'States,residing at Detroit, county of Wayne, State of Michigan, have invented acertain new and useful Improvement in Transmission Mechanism forAutomobiles, and declare the following to be a full, clear, and exactdescription of the same, such as will enable others skilled in the artto which it pertains to make and use the same, reference being had tothe accompanying drawings, which form a part of this specification. A

My invention relates to transmission mechanism for automobiles andconsists in the improvements hereinafter described and pointed out inthe claims.

In the accompanying drawings :-Figure 1, is a lofigitudinal section of apart of the mechanism embodying my invention. Fig.

2, is a detail plan view of a ring forming part of the equalizing gearmechanism. Fig. 3, is a central section of the ring of Fig. 2. Fig. i,is a detail view of an end of a portion of the shaft.

A A is a shaft through which the power I wheel H is fitted upon asquared automobile. In this case the shaft A A represents the countershaft upon the ends of which, not shown, are sprocket wheels from whichthe power is transmitted to the driving wheels of the vehicle. The shaftA is made up of three parts a B and C. The parts B and C are adjacent attheir inner ends and are united by an equalizing gear D D of whichequalizing gear, E is the casing and F a bevel gear wheel secured to thecasing D.

G, indicates the end of the power shaft and H is a bevel gear wheel onthe shaft G, its teeth engaging the gear F to rotate the casing E.

I, is a bevel gear wheel on the inner end of the portion C'of the shaftA A, and J is a bevel gear wheel on the inner end of the ortionB of theshaft A A. The gear wheel l is fixed upon the shaft C and the gearportion 5 of the portion B of the shaft A A.

L, is a ring concentric with the shaft A A and carrying arbors 0extending radially from its periphery upon which arbors are pivotedbevel gear wheels P which latter engage the gear wheels I and J. Thearbors O extend into the casing E so'that when said casing is rotatedmotion is imparted to the gear wheels I and area.

Patented Feb. i3, i912.

J and their respective shafts while leaving said shafts or portions ofthe shaft A A free to turn independently. N, are teeth formed inanannular web left in the ring L and M are teeth on the inner end of theportion B of the shaft A A.

Q, is a shifting lever pivoted to the stationary support at R.

S, is a sleeve fixed upon the portion B of the shaft A A and having asquare bore which fits upon the squared portion a of the portion a ofthe shaft A A.

s is a groove in the periphery of the sleeve S and u is a ring in saidgroove. The lower end of the lever ring a.

f.l, is a quadrant by means of which the shifting lever Q can beadjusted to any desired position.

The operation of the above described device is as follows :In theordinary opera- Q, is pivoted to the tion, the shaft G is drivenrotating the casing E of the equalizing gear D D and driving both partsof the shaft A A and both driving wheels while leaving said drivingwheels free to turn independently, but should it be desired to move thedriving wheels simultaneously the shaft B is caused to slide inward bythe shifting lever Q, the sleeve S sliding along the squared portion aof the portion a of the shaft A A. When the said portion B has beenshifted to the inner end of its travel, its teeth engage the teeth N inthe ring L and the portions B and C of the shaft A A are bound togetherthrough the equalizing gear mechanism so that both drivers are movedsimultaneously. To disconnect the drivers so that they may be drivenwith an equal force by independent motion, the portion B is again movedoutward, the sleeve S-slidingalong the por-' tion a of theshaft A A asbefore described. The ring L is generally a forging and the dies are soformed as to leave a thin web extending around the inner wall of saidring and in this web teeth N are formed. What I claim is 1. In atransmission mechanism two ortions of a shaft an equalizing gearing av-,ing a ring L uniting the portions of said shaft, said ring beingprovlded with teeth, the inner end of one of said shaft portions beingprovided with teeth and means for movmg said p0rtion of said shaftlongitudinally to engage and disengage said teeth for the purposedescribed.

:2. In t'mnsn'lission mechanism, two shaft portions hzwing n11oqlmlizing g aring unitsuht shaft portions and provided with :1 Pin Lliming; an internal web, said Web belo provided with teeth formedtherein and means for engaging one of said shaft portion: "with saidteeth.

3. In :1 transmission. mechanism, two shaftpomion'w; ha ing an equaliring gearing uniting said :shn t't portions, and provided with. a ring Lha xing an internal Web, said Web being gyz'tnih led with teeth formedtherein, the

inner end of one of said shaft portions being provlded 'wlth teeth andmeans for movlng said shaft portion longitudinally to engage 15 MAX. H.GRABOXVSKY. VVit-nesses THOMAS H. MILLAR, ELLIOTT J. STODDARD.

